• Title/Summary/Keyword: ad libitum

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Effects of Ethanol and Saccharin on the Immune Response in Rats (랏트에 있어서 에탄올과 삭카린이 면역반응에 미치는 영향)

  • 안영근;김주영;김정훈;염정열
    • Environmental Analysis Health and Toxicology
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    • v.2 no.1_2
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    • pp.33-42
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    • 1987
  • Experiments were performed to investigate effects of ethanol and saccharin on the immune system in rats. 4% ethanol and 0.02, 0.20, 2.00% saccharin solution in 4% ethanol were provided ad libitum by tap water for 4 weeks. Rats were sensitized and challenged with sheep red blood cells (S-RBC). Immune responses were evaluated by relative immuno organ weight, antibody production, Arthus reaction, delayed type hypersensitivity, and rosette forming cell. Ethanol exposure decreased thymus weight and delayed type hypersensitivity. A combined solution of ethanol and saccharin decreased water intake, growth rate, spleen weight, thymus weight, humoral and cellular immune response. Especially, a 2% saccharin solution in 4% ethanol very significantly suppressed cellular immunity.

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Effects of nutritional supplementation of cereal-vegetable diet on the growth of rats (III) (곡류.야채식이의 영양소 보완이 흰쥐의 성장에 미치는 영향 (III))

  • 류춘희
    • Journal of the Korean Home Economics Association
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    • v.24 no.2
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    • pp.51-62
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    • 1986
  • This study was designed to observe the effects of nutritional supplementation of general Korean diet on protein metabolism in growing rats. Seventy weanling Sprague-Dawely male rats weighing 76.8$\pm$1.45g were blocked into ten groups and fed ten different experimental diets for eight weeks. The rats in cereal-vegetable group were fed ad libitum for all the experimental period and those in other experimental groups were pairfed following the feed intake of rats in C-V gp. Control group was given 72% cornstarch-29% casein diet : C-V gp was fed cerealvegetable diet composed of rice, barley, soybean and Chinese cabbage : the other eight groups were fed C-V diets supplemented with casein, vitamin B\sub 2\ calcium, vitamin A, vitamin B\sub 2\ and vitamin A, vitamin A and calcium, vitamin B\sub 2\ and calcium, vitamin A and vitamin B\sub 2\ and calcium, respectively, on the basis of each nutrients content of standard diet.

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GROWTH PATTERN AND BLOOD PICTURE OF BEETAL AND BARBARI GOATS

  • Ramzan, M.;Gill, R.A.;Hanjra, S.H.;Ahmed, Z.;Nadeem, M.A.
    • Asian-Australasian Journal of Animal Sciences
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    • v.1 no.3
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    • pp.167-171
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    • 1988
  • A comparative growth trial involving 12 Beetal and 12 Barbari kids was conducted for 120 days. The kids were allowed to suckle their dams and also offered ad libitum green fodder and concentrate at 2% of their liveweight. Beetal kids attained higher (P<.01) weight, consumed more (P<.01) milk, green fodder and concentrate, and utilized protein efficiently as compared to Barbari kids. However, variation due to sex was non-significant. Blood glucose, protein and cholesterol levels increased (P<.01) with increasing age irrespective of sex and breed.

The Effect of Supplementation of Jackfruit Leaves (Artocarpus heterophyllus) and Mashkalai (Vigna mungo) Bran to Common Grass on the Performance of Goats

  • Islam, M.;Chowdhury, S.A.;Alam., Chowdhury
    • Asian-Australasian Journal of Animal Sciences
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    • v.10 no.2
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    • pp.206-209
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    • 1997
  • The effect of supplementation of Jackfruit (Artocarpus heterrophyllus) tree leaves and mashkalai (Vigna mungo) barn on the intake and digestibility of freshly cut common grass by Black Bengal goats was evaluated. Twelve castrated goats of approximately 5-6 months age were randomly allocated to three dietary treatments: freshly cut common grass ad libitum, common grass+100g Jackfruit tree leaves and common grass+100g mashkalai bran. Although digestibilities of dry matter, organic matter, nitrogen and neutral detergent fibre were very similar in the grass alone and mashkalai bran supplemented goats but the values were significantly (P < 0.01) higher than those observed in the Jackfruit leaves supplemented goats. Supplementation of mashkalai bran promoted higher (p < 0.05) digestible nutrients intake with the consequent higher daily live weight gain (75 g) than those fed grass alone (31 g). It could be concluded that mashkalai bran could be a suitable supplement for goats consuming common grass in the tropics and subtropics.

Effects of the Rehmanniae Radix Preparat on Ovariectomized Rats (숙지황(熟地黃)이 난소적출(卵巢摘出)로 폐경(閉經)이 유발(誘發)된 흰쥐에 미치는 영향(影響))

  • Cho, Su-In
    • The Korea Journal of Herbology
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    • v.20 no.4
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    • pp.61-67
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    • 2005
  • Objectives : Obese and osteoporosis are diseases characterized by bone loss and morbidity with osteoporotic fracture is increasing in elderly. The present study was carried out to determine the effects of Rehmanniae Radix Preparat(RRP) on the postmenopausal obese. Methods : The variance of body weight, femoral bone weight, serum level of cholesterol and microscopic view of tibia were investigated. Animals were observed for 8 weeks, and vehicle and extracts of prescriptions were administered ad libitum. Results : Body weight increased significantly in 6 weeks after ovariectomy, and the weight of RRP administered group decreased significantly. RRP decreased the serum level of cholesterol. Conclusions : According to above results, RRP can be used for prevention and curing the postmenopausal obese.

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Development of Apoptosis Model and Bioimmune Responses in Experimental Animal I. Induction and Indicator of Apoptosis and Hepatic Tumorigenesis (실험동물에서 Apoptosis의 모델개발과 생체면역반응 및 형태학적 특징 I. Apoptosis 및 Hepatic Tumorigenesis의 유도 및 관련지표의 검색)

  • 강정부;하우송;김지경
    • Journal of Veterinary Clinics
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    • v.16 no.1
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    • pp.100-107
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    • 1999
  • Apoptosis is now widely recognized as a common form of cell death and represents mechanism of cell clearance in many physiological situations where deletion of cells is required. In vivo administration of bacterial lipopolysaccharide (LPS) to Balb/c mice induced DNA fragmentation in the thymus. DNA fragmentation in the thymus was roughly dependent on the dose of LPS injected and reached the peak 18 hours after injection. This apoptosis in the thymus might be mediated due to LPS stimulant. DEN (diethylnitrosamine) has been shown to cause liver cancer in experimental animals and humans. The hepatic tumorigenesis was induced by ad libitum feeding of DEN only. It was suggested that DEN induced hepatic tumorgenesis in rat is a good reproducible model for studying biochemical and pathophysiological changes associated with the development of hepatic tumorigenesis and apoptosis.

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Effect of Dietary Protein Level on Ca Efficiency in Bone Mineral Density in Growing Rats (식이단백질량이 성장기 흰쥐가 골밀도에 대한 칼슘효율에 미치는 영향)

  • 정소형
    • Journal of Nutrition and Health
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    • v.28 no.9
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    • pp.817-824
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    • 1995
  • This study was performed to evaluate the effect of dietary protein level on Ca efficiency in bone mineral density in growing male rats. Twenty male rate were divided into two groups. The rats in one group were fed on casein 20% diet as control group and the others were fed on casein 40% diet as protein group. All rats were fed on experimental diet and deionized water ad libitum for 9 weeks. The total body, spine and femur bone mineral density and bone mineral content were measured using dual energy-x ray absorptiometry. Urinary calcium, phosphate, pyridinoline and creatinine, serum calcium, phosphate, total protein, albumin, alkaline phosphatase(ALP) and osteocalcin were measured. Urinary Ca excretion, pyridinoline and crosslinks value and serum ALP content seem to be increased in high protein group. It appears that the growing rats in high protein group had a higher bone resprption and bone formation than those in control group. Animal fad a high protein diet had a siginficantly higher Ca efficiency in BMD, BMC of total body, spine and femur. The results of this show that increasing of dietary protein level (40%) is beneficial of improvement of Ca efficiency during growing period.

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Effect on the Change of Sugar Metabolism in Rat by Fed the Honey (벌꿀 섭취가 흰쥐의 당 대사 변화에 끼치는 영향)

  • 정동현;백승화
    • The Korean Journal of Food And Nutrition
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    • v.9 no.2
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    • pp.189-200
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    • 1996
  • The purpose of this study was to find the effect of honey on the sugar metabolism In Sprague-Dawley rats. All experimental rats were fed ad libitum, for seven weeks, 68% saccharide diet anti 10% or 20% honey from acacia, sumac and miscellaneous flower honey, respectively, and sucrose. The amount of glucose in whole blood was increased in all groups fed with honey except the group fed with 10% sumac honey solution. The amount of fructosamine in serum of rat taken diet with honey solution was increased in comparison with normal group, control group, sucrose group. The amount of fructosamine in serum of rat taken diet with honey solution was high in order of sumac honey > miscellaneous flower honey > acacia honey. The amount of lactate and pyruvate in whole blood of rat taken diet with sucrose group or honey group were decreased in comparison with the normal group and control group. The amount of $\beta$-hydroxybutyrate in serum of rat taken diet with sucrose or honey was increased in comparison with the normal group, control group.

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LIQUID FEEDING OF HOGS WITH FEED-LEVEL-SENSORS IN THE TROUGHS

  • Heege, H.J.;Reineke, B.;Hgle, T.
    • Proceedings of the Korean Society for Agricultural Machinery Conference
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    • 1993.10a
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    • pp.791-800
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    • 1993
  • Liquid feeding of hogs can be controlled by using feed-level-sensors in the troughs. In this way restricted feeding with computer control of the eating time is possible. For this purpose the feed supplied is adjusted according to the eating time of the previously fed portion. With ad libitum feeding the same sensors can provide for a clean trough once a day and thus help to overcome sanitary problems. The effect of the feeding systems on daily intake and performance of hogs are dealt with.

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Effects of Jerusalem Artichoke and Chicory on Lipid Metabolism in Rats (돼지감자 및 치커리 섭취가 흰쥐의 지질대사에 미치는 영향)

  • 이정선
    • Journal of Nutrition and Health
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    • v.31 no.1
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    • pp.13-20
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    • 1998
  • This study was carried out to determine the effects of Jerusalem artichoke (JA) powder , JA extract and chicory extract on lipid metabolism in SD rats. The experimental groups were divided into 4 groups ; control, JA powder JA extract and chicory extract. The animals were fed ad libitum each of the experimental diets for 3 weeks. After 3 weeks, the wet weights of cecum were significantly increased in rats fed JA powder and chicory extract. Cecal contents were slightly increased in all experimental groups. Serum HDL-cholesterol, HDL-cholesterol/total cholesterol ratio and atherogenic index were significantly increased in the chicory extract group. Serum triglyceride, total cholesterol and LDL-cholesterol levels were not different among the diet groups. Although the feeding of chicory extract significantly lowered total lipid of liver, there was no difference in levels of triglyceride and total cholesterol. The content of fecal lipiid and cholesterol were significantly higher in the Ja extract and chicory extract group than other groups. Fecal bile acid was significantly increased in the chicory extract group. These results indicate that chicory extract is an effective regimen for improvement of lipid metabolism in SD rats.

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